The Maharashtra Rajya Suraksha Rakshak Union submitted an application at the Bandra-Kurla Complex (BKC) police station on Monday, claiming the remark was an “insult” to security guards, a police official told agencies on Tuesday.

The association has claimed that during his rally at the MMRDA grounds earlier this month, Gandhi said that “chowkidar chor hai” (the guard is the thief), police said.

The Union president Sandeep Ghuge said that police should register an offence against Gandhi to stop “such kind of slogans insulting the security guards.”

Gandhi has been repeatedly hurling the “chowkidar chor hai” jibe at Modi to claim irregularities and favouritism in the Rafale deal, a charge the BJP-led government has rejected.